Blind-finishing machine



(No Model.)

L. G. GRAUPNER.

BLIND FINISHING MACHINE.

.L m NW NW 9 0v v n J A m I m n m p m P I Q P WITNESSES:-

TORNBY S.

lhvrran STATES ATENT rrrca.

LOUIS O. GRAUPNER, 0F RED BLUFF, CALIFORNIA.

BLIND-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 245,481, dated August9, 1881.

Application filed June 2, 1881.

10 all whom it may concern:-

Be it known that I, LoUIs CARL GRAUP- NER, of Red Bluff, in the countyof Tehama and State of California, have invented a new and usefulImprovement in Blind-Finishing Machines, of which the following is afull, clear, and exact description.

In the accompanying drawings, Figure l is a plan view of my improvement.Fig. 2 is a sectional side elevation of the same, taken through the line00 m, Fig. 1. Fig. 3 is a sectional end elevation of the same, takenthrough the line y 3 Fig. 1.

Similar letters of reference indicate corresponding parts.

The object of the invention is to facilitate the finishing of blinds andpromote accuracy in the finished blinds.

A represents the frame of the machine. To the top of the frame A areattached cross-bars B, in the upper sides of which are form eddovetailed grooves to receive dovetailed strips at' tached to the guidesO D, so that the guide D can be moved toward or from the guide 0, as thewidth of the blinds may require. The guides O D are secured in placeupon the crossbars B by screws E and hand-nuts F. The heads of thescrews E fit into the dovetailed grooves of the cross-bars B, so thatthe guides G D will be firmly clamped to the said crossbars B bytightening the nuts F. i

To the side bar of the frame A are swiveled screws G, which pass throughscrew-holes in the nuts H attached to the guide D.

To the outer ends of the screws G are at-l tached beveled-gear wheels I,the teeth of which mesh into the teeth of beveled-gear wheels J attachedto the shaft K. The shaft K -revel ves in bearings attached to the frameA, and to one of its ends is attached a crank, L. With thisconstruction, by turning the crank L in one or the other direction theguide D can be moved in or out, as the width of the blinds may require.

The edge of the blind isjointed by the cutters M, attach ed to thecutter-head N, which is attached to the upper end of the mandrel O. Themandrel O revolves in bearings attached to a hanging frame, P, securedat its upper end to the guide D. To the mandrel O is attached a pulley,Q, to receive a band, It, which also (No model.)

passes around a long pulley, S, attached to the shaft T'. With thisconstruction the cutterhead N and its mandrel 0 will be carried with theguide D as the said guide is adjusted, so that the cutter-head willalways be in position for work. The shaft T revolves in bearingsattached to the end of the frame A, and to one end of the said shaft Tis attached a fast pul- 165, U, and a loose pulley, V, to receive thedriving-belt. The other edge of the blind is rabbeted by the cutters NV,attached to the cutter-head X, which is attached to the upper end of themandrel Y. The mandrel Y revolves in bearings attached to the frame A,and to it is attached a pulley, Z, to receive the band a, which alsopasses around a pulley, I), attached to the shaft T.

At a little distance from the rabbeting cutter-head X is placed acutter-head, 0, for forming a bead upon the blind-stile. The cutterhead0 is attached to a horizontal mandrel, d, which revolvesin bearings e,placed in a small frame,f. The frame f passes around a side bar of theframe A. Through the bottom bar or plate of the framef passes aset-screw, g, which rests against the lower side of the side bar of theframe A, so that the framef, and with it the bearings e and mandrel d,can be raised and lowered by turning the screw g, to adjust thebeading-head o to cut a deeper or shallower head, as may be required.

With the bearings e, or an arm attached to or formed upon the saidbearings and with the frame f, is connected a set-screw, it, so that thebearings e and mandrel d can be moved in or outto adjust thebeading-head laterally to form the bead in proper position upon theblindstile.

To the outer end of the mandrel dis attached a pulley, z, to receive thebelt j, which passes around a pulley, 7, attached to the shaft T, fordriving the cutter-head 0.

To the guide D are attached springs l to hold the blind against theguide 0 while passing to the cutters; and to the guides (J D areattached springs m, to hold the blind downnpon the guides O D whilepassingfrom the cutters. The springs l m can have rollers n pivoted totheir free ends, to prevent iriction between the blinds and the saidsprings; but the said rollers are not essential.

The blinds are fed to the cutters with a uniform movement byfeed-rollers 0, attached to the inner ends of two parallel shafts, 1?,which revolve in bearings attached to the guide 0 and to the frame A. Tothe outer ends of the shafts P are attached gear-wheels q, the teeth ofwhich mesh into the teeth of a third gearwheel, 1', placed beneath thespace between the said gear-wheels q, so that the two feedrollers 0 willbe driven in the same direction. The gear-wheel r is pivoted to theframe A, and to the outer end of its journal is attached a pulley, s,around which passes a belt, 1. The belt t also passes around a pulley,u, attached to the shaft 1:, which revolves in bearings attached to theframe A. The belt t is put on loose, and is tightened by a pulley, w,pivoted to the angle of an angled lever, :12, the lower end of which ispivoted to the frame A. The upper arm of the lever 00 projects into sucha position that it can be conveniently reached and operated by theattendant.

To the upper end of the lever 00 is attached a handle or round, 3 whichprojects over the machine for convenience in operating the said lever.With this construction the attendant, by giving less or more tautness tothe belt t,

can regulate the feed of the blinds to the cutters as circumstances mayrequire- To the shaft 1) is also attached a pulley, 2, around whichpasses a belt, 1. The beltl also passes around a pulley, 2, attached tothe shaft T, so that the shaft 02 will be driven from the said shaft T.

\Vith this construction the machine will head, rabbet, and joint blindsrapidly and accurately, leaving the side edges of the blind parallel,and can be readily adjusted to operate upon outside blinds or uponinside blinds, rabbeting both edges, or rabbeting one edge and makingthe other edge knuckle-jointed or of any other desired shape.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The combination, with the mandrel O, having a head with cutters M, andthe guide I), of an intermediate hanging frame, P, secured at its upperend to the guide, as shown and described.

LOUIS CARL GRAUPNER.

Witnesses:

J OSEPH KNIGHT, O. E. TINKHAM.

